<?php

namespace Modules\Business\App\Http\Controllers;

use App\Models\Vat;
use App\Models\Sale;
use App\Models\Purchase;
use App\Http\Controllers\Controller;
use App\Services\PdfService;
use App\Traits\DateFilterTrait;
use App\Traits\DateRangeTrait;
use Illuminate\Http\Request;
use Maatwebsite\Excel\Facades\Excel;
use Modules\Business\App\Exports\ExportVatReport;

class AcnooVatReportController extends Controller
{
    use DateFilterTrait, DateRangeTrait;

    public function __construct()
    {
        $this->middleware('check.permission:vat-reports.read')->only(['index']);
    }

    public function index(Request $request)
    {
        $businessId = auth()->user()->business_id;
        $vats = Vat::where('business_id', $businessId)->whereStatus(1)->get();

        $duration = $request->custom_days ?: 'today';
        [$filter_from_date, $filter_to_date] = $this->applyDateRange($duration, $request->from_date, $request->to_date);

        $salesQuery = Sale::with('user:id,name', 'party:id,name,email,phone,type', 'business:id,companyName', 'payment_type:id,name', 'transactions')
            ->where('business_id', $businessId)
            ->where('vat_amount', '>', 0);

        // Date Filter
        $this->applyDateFilter($salesQuery, $duration, 'saleDate', $request->from_date, $request->to_date);

        $sales = $salesQuery->latest()->paginate(20, ['*'], 'sales');

        $salesVatTotals = [];
        foreach ($vats as $vat) {
            $salesVatTotals[$vat->id] = (clone $salesQuery)->where('vat_id', $vat->id)->sum('vat_amount');
        }

        $purchasesQuery = Purchase::with('details', 'party', 'details.product', 'details.product.category', 'payment_type:id,name', 'transactions')
            ->where('business_id', $businessId)
            ->where('vat_amount', '>', 0);

        // Date Filter
        $this->applyDateFilter($purchasesQuery, $duration, 'purchaseDate', $request->from_date, $request->to_date);

        $purchases = $purchasesQuery->latest()->paginate(20, ['*'], 'purchases');

        $purchasesVatTotals = [];
        foreach ($vats as $vat) {
            $purchasesVatTotals[$vat->id] = (clone $purchasesQuery)->where('vat_id', $vat->id)->sum('vat_amount');
        }

        if ($request->ajax()) {
            return response()->json([
                'sale_data' => view('business::reports.vats.sale-datas', compact('sales', 'salesVatTotals', 'vats', 'filter_from_date', 'filter_to_date', 'duration'))->render(),
                'purchase_data' => view('business::reports.vats.purchase-datas', compact('purchases', 'purchasesVatTotals', 'vats', 'filter_from_date', 'filter_to_date', 'duration'))->render(),
            ]);
        }

        return view('business::reports.vats.index', compact('sales', 'salesVatTotals', 'purchases', 'purchasesVatTotals', 'vats', 'filter_from_date', 'filter_to_date', 'duration'));
    }

    public function exportExcel($type = 'all')
    {
        return $this->exportFile($type, 'vat-report.xlsx');
    }

    public function exportCsv($type = 'all')
    {
        return $this->exportFile($type, 'vat-report.csv');
    }

    private function exportFile($type, $filename, $format = null)
    {
        $businessId = auth()->user()->business_id;

        $sales = collect();
        $purchases = collect();

        if ($type === 'sales' || $type === 'all') {
            $sales = Sale::with('user:id,name', 'party:id,name,email,phone,type', 'payment_type:id,name', 'transactions')
                ->where('business_id', $businessId)
                ->where('vat_amount', '>', 0)
                ->latest()
                ->get();
        }

        if ($type === 'purchases' || $type === 'all') {
            $purchases = Purchase::with('details', 'party', 'details.product', 'details.product.category', 'payment_type:id,name', 'transactions')
                ->where('business_id', $businessId)
                ->where('vat_amount', '>', 0)
                ->latest()
                ->get();
        }

        $vats = Vat::where('business_id', $businessId)->get();

        $salesVatTotals = [];
        foreach ($vats as $vat) {
            $salesVatTotals[$vat->id] = $sales->where('vat_id', $vat->id)->sum('vat_amount');
        }

        $purchasesVatTotals = [];
        foreach ($vats as $vat) {
            $purchasesVatTotals[$vat->id] = $purchases->where('vat_id', $vat->id)->sum('vat_amount');
        }

        $export = new ExportVatReport($sales, $purchases, $vats, $salesVatTotals, $purchasesVatTotals);

        return Excel::download($export, $filename, $format);
    }

    public function exportPdf($type = 'all')
    {
        $businessId = auth()->user()->business_id;

        $sales = collect();
        $purchases = collect();

        if ($type === 'sales' || $type === 'all') {
            $sales = Sale::with('party', 'payment_type')
                ->where('business_id', $businessId)
                ->where('vat_amount', '>', 0)
                ->latest()
                ->get();
        }

        if ($type === 'purchases' || $type === 'all') {
            $purchases = Purchase::with('party', 'payment_type')
                ->where('business_id', $businessId)
                ->where('vat_amount', '>', 0)
                ->latest()
                ->get();
        }

        $vats = Vat::where('business_id', $businessId)->get();

        $salesVatTotals = [];
        foreach ($vats as $vat) {
            $salesVatTotals[$vat->id] = $sales->where('vat_id', $vat->id)->sum('vat_amount');
        }

        $purchasesVatTotals = [];
        foreach ($vats as $vat) {
            $purchasesVatTotals[$vat->id] = $purchases->where('vat_id', $vat->id)->sum('vat_amount');
        }

        return PdfService::render('business::reports.vats.pdf', compact('sales', 'salesVatTotals', 'purchases', 'purchasesVatTotals', 'vats', 'type'),'vats-report.pdf');
    }
}